when one door closes, another (one/door) opens

The end of one situation or opportunity is often followed by the start of a new one. Don't worry about not getting this job, honey—when one door closes, another one opens. I know you're heartbroken, but this isn't the end of the world. After all, when one door closes, another opens! You've got to bounce back from every deal that doesn't work out in this industry, because when one door closes, another door opens, and you've got be ready when it does.